Feature Comparison
ChatGPT, Claude, Gemini, and Microsoft Copilot are the four most widely used AI assistants right now. They're all capable of answering questions, writing, summarizing, and reasoning — but they have real differences worth knowing before you pick a default.
AI tools change fast. This comparison reflects mid-2026. Features and pricing shift regularly — verify on each provider's website before making a purchasing decision.
What each one can do
"Free" means available on the no-cost tier. "Paid" means a paid plan is required. "—" means the feature doesn't exist.
| Feature | ChatGPT | Claude | Gemini | Copilot |
|---|---|---|---|---|
| Voice conversation mode | Paid | Paid | Free + Paid | Free + Paid |
| Deep research (multi-source reports) | Free (limited) + Paid | Paid | Free (5/month) + Paid | Free (5/month) + Paid |
| Generate images | Free (limited) + Paid | — | Free + Paid | Free (limited) + Paid |
| Read and analyze documents | Free + Paid | Free + Paid | Free + Paid | Free + Paid |
| Browse the web | Free + Paid | Free + Paid | Free + Paid | Free + Paid |
| Remember you across conversations | Free + Paid | Free + Paid | Limited | Free + Paid |
| In-chat code execution | Paid | — | Free + Paid | Free + Paid |
| Google Workspace (Gmail, Docs, Drive) | — | — | Free + Paid | — |
| Microsoft 365 (Word, Excel, Outlook, Teams) | — | Team plan only | — | Yes (core feature) |
| Third-party app connections (Zapier, Slack, etc.) | Limited | Limited | Limited | Limited |
| Mobile app | Yes | Yes | Yes | Yes |
| Desktop app | Yes | Yes | No | Yes (built into Windows) |
A few notes on the table:
- Claude's "—" on code execution refers to in-chat code running. Claude does have Claude Code, a powerful developer tool, but it's a separate application aimed at software developers — not in-chat like the others.
- Gemini's free deep research is capped at 5 reports per month, which is genuinely useful for occasional research without paying.
- All four voice modes are real back-and-forth conversation, not just dictation. You speak, it speaks back.
- Copilot's Microsoft 365 integration is its defining feature. It's embedded directly into Word, Excel, Outlook, Teams, and PowerPoint — no other AI assistant matches this depth for Microsoft users.
What this means in practice
ChatGPT is the most feature-complete general assistant. Image generation, voice, deep research, code execution, and the widest plugin ecosystem are all in one place. If you want the full range of what AI can do in a single product, this is the strongest option.
Claude is the best for writing and reasoning. It consistently produces cleaner, more nuanced prose than the others and handles long, complex documents especially well. What it lacks in breadth — no image generation, no in-chat code running — it compensates for in quality on the things it does. It's also the strongest coding assistant by most benchmarks, though its coding tool (Claude Code) is designed for developers, not general users.
Gemini has the deepest Google integration and the most generous free tier. If you live in Gmail, Google Docs, or Google Calendar, Gemini can reach into those directly. Voice mode, image generation, and limited deep research are all available without paying — more than any competitor offers for free.
Copilot is built for Microsoft 365 users. If your work or personal life runs through Word, Excel, Outlook, or Teams, Copilot is the only AI that plugs directly into all of it. It's built into Windows 11 and the Edge browser, so for many people it's already there. As a standalone general AI assistant, it's capable but not the leader — where it pulls ahead is inside the Microsoft ecosystem.
The honest gaps
A few things none of them do well yet:
- Connecting to non-platform apps is limited across the board. Integrations via Zapier or Make are possible but require setup and technical comfort.
- Accuracy on specific or recent facts is imperfect for all four. They can state things confidently that turn out to be wrong. Verify anything consequential.
- Consistency varies. Ask the same question twice and you may get meaningfully different answers. This is a known limitation of how these systems work.